How can I make a part in Inventor which is a rolled sheet metal such that its flat pattern is linked and generated. I know this can be done possibly by using 2 folds of 180 degrees each (actually the second a little less than 180 deg to give a gap for butt-welding the longitudinal seam). But this is not all - I want to have cutouts in the cylinder at known places for pipe nozzles piercing through this cylinder. Moreover, one free edge of this cylinder is joggled in using roll forming, and near the other edge, a rolled bead is formed into this shell all around. The real challenge is that this be done all in sheet metal application so that a flat layout of the whole thing can be obtained. Can this be done and how?